/*
 * Facebox (for jQuery) version: 1.2 (05/05/2008) @requires jQuery v1.2 or later
 * 
 * Examples at http://famspam.com/facebox/
 * 
 * Licensed under the MIT: http://www.opensource.org/licenses/mit-license.php
 * 
 * Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
 * 
 * Usage:
 * 
 * jQuery(document).ready(function() { jQuery('a[rel*=facebox]').facebox() })
 * 
 * <a href="#terms" rel="facebox">Terms</a> Loads the #terms div in the box
 * 
 * <a href="terms.html" rel="facebox">Terms</a> Loads the terms.html page in
 * the box
 * 
 * <a href="terms.png" rel="facebox">Terms</a> Loads the terms.png image in the
 * box
 * 
 * 
 * You can also use it programmatically:
 * 
 * jQuery.facebox('some html')
 * 
 * The above will open a facebox with "some html" as the content.
 * 
 * jQuery.facebox(function($) { $.get('blah.html', function(data) {
 * $.facebox(data) }) })
 * 
 * The above will show a loading screen before the passed function is called,
 * allowing for a better ajaxy experience.
 * 
 * The facebox function can also display an ajax page or image:
 * 
 * jQuery.facebox({ ajax: 'remote.html' }) jQuery.facebox({ image: 'dude.jpg' })
 * 
 * Want to close the facebox? Trigger the 'close.facebox' document event:
 * 
 * jQuery(document).trigger('close.facebox')
 * 
 * Facebox also has a bunch of other hooks:
 * 
 * loading.facebox beforeReveal.facebox reveal.facebox (aliased as
 * 'afterReveal.facebox') init.facebox
 * 
 * Simply bind a function to any of these hooks:
 * 
 * $(document).bind('reveal.facebox', function() { ...stuff to do after the
 * facebox and contents are revealed... })
 * 
 */
(function($) {
	$.facebox = function(data, klass) {
		$.facebox.loading()

		if (data.ajax)
			fillFaceboxFromAjax(data.ajax)
		else if (data.image)
			fillFaceboxFromImage(data.image)
		else if (data.div)
			fillFaceboxFromHref(data.div)
		else if ($.isFunction(data))
			data.call($)
		else
			$.facebox.reveal(data, klass)
	}

	/*
	 * Public, $.facebox methods
	 */

	$.extend($.facebox, {
		settings : {
			opacity : 0,
			overlay : true,
			loadingImage : 'resources/images/loading.gif',
			closeImage : 'resources/images/closelabel.gif',
			imageTypes : ['png', 'jpg', 'jpeg', 'gif'],
			faceboxHtml : '\
    <div id="facebox" style="display:none;"> \
      <div class="popup"> \
        <table> \
          <tbody> \
            <tr> \
              <td class="tl"/><td class="b"/><td class="tr"/> \
            </tr> \
            <tr> \
              <td class="b"/> \
              <td class="body"> \
                <div class="content"> \
                </div> \
                <div class="footer"> \
                  <a href="#" class="close"> \
                    <img src="resources/images/closelabel.gif" title="close" class="close_image" /> \
                  </a> \
                </div> \
              </td> \
              <td class="b"/> \
            </tr> \
            <tr> \
              <td class="bl"/><td class="b"/><td class="br"/> \
            </tr> \
          </tbody> \
        </table> \
      </div> \
    </div>'
		},

		loading : function() {
			init()
			if ($('#facebox .loading').length == 1)
				return true
			showOverlay()

			$('#facebox .content').empty()
			$('#facebox .body').children().hide().end()
					.append('<div class="loading"><img src="'
							+ $.facebox.settings.loadingImage + '"/></div>')

			$('#facebox').css({
						top : getPageScroll()[1] + (getPageHeight() / 10),
						left : 385.5
					}).show()

			$(document).bind('keydown.facebox', function(e) {
						if (e.keyCode == 27)
							$.facebox.close()
						return true
					})
			$(document).trigger('loading.facebox')
		},

		reveal : function(data, klass) {
			$(document).trigger('beforeReveal.facebox')
			if (klass)
				$('#facebox .content').addClass(klass)
			$('#facebox .content').append(data)
			$('#facebox .loading').remove()
			$('#facebox .body').children().fadeIn('normal')
			$('#facebox').css('left',
					$(window).width() / 2 - ($('#facebox table').width() / 2))
			$(document).trigger('reveal.facebox')
					.trigger('afterReveal.facebox')
		},

		close : function() {
			$(document).trigger('close.facebox')
			return false
		}
	})

	/*
	 * Public, $.fn methods
	 */

	$.fn.facebox = function(settings) {
		init(settings)

		function clickHandler() {
			$.facebox.loading(true)

			// support for rel="facebox.inline_popup" syntax, to add a class
			// also supports deprecated "facebox[.inline_popup]" syntax
			var klass = this.rel.match(/facebox\[?\.(\w+)\]?/)
			if (klass)
				klass = klass[1]

			fillFaceboxFromHref(this.href, klass)
			return false
		}

		return this.click(clickHandler)
	}

	/*
	 * Private methods
	 */

	// called one time to setup facebox on this page
	function init(settings) {
		if ($.facebox.settings.inited)
			return true
		else
			$.facebox.settings.inited = true

		$(document).trigger('init.facebox')
		makeCompatible()

		var imageTypes = $.facebox.settings.imageTypes.join('|')
		$.facebox.settings.imageTypesRegexp = new RegExp('\.' + imageTypes
						+ '$', 'i')

		if (settings)
			$.extend($.facebox.settings, settings)
		$('body').append($.facebox.settings.faceboxHtml)

		var preload = [new Image(), new Image()]
		preload[0].src = $.facebox.settings.closeImage
		preload[1].src = $.facebox.settings.loadingImage

		$('#facebox').find('.b:first, .bl, .br, .tl, .tr').each(function() {
			preload.push(new Image())
			preload.slice(-1).src = $(this).css('background-image').replace(
					/url\((.+)\)/, '$1')
		})

		$('#facebox .close').click($.facebox.close)
		$('#facebox .close_image').attr('src', $.facebox.settings.closeImage)
	}

	// getPageScroll() by quirksmode.com
	function getPageScroll() {
		var xScroll, yScroll;
		if (self.pageYOffset) {
			yScroll = self.pageYOffset;
			xScroll = self.pageXOffset;
		} else if (document.documentElement
				&& document.documentElement.scrollTop) { // Explorer 6 Strict
			yScroll = document.documentElement.scrollTop;
			xScroll = document.documentElement.scrollLeft;
		} else if (document.body) {// all other Explorers
			yScroll = document.body.scrollTop;
			xScroll = document.body.scrollLeft;
		}
		return new Array(xScroll, yScroll)
	}

	// Adapted from getPageSize() by quirksmode.com
	function getPageHeight() {
		var windowHeight
		if (self.innerHeight) { // all except Explorer
			windowHeight = self.innerHeight;
		} else if (document.documentElement
				&& document.documentElement.clientHeight) { // Explorer 6 Strict
															// Mode
			windowHeight = document.documentElement.clientHeight;
		} else if (document.body) { // other Explorers
			windowHeight = document.body.clientHeight;
		}
		return windowHeight
	}

	// Backwards compatibility
	function makeCompatible() {
		var $s = $.facebox.settings

		$s.loadingImage = $s.loading_image || $s.loadingImage
		$s.closeImage = $s.close_image || $s.closeImage
		$s.imageTypes = $s.image_types || $s.imageTypes
		$s.faceboxHtml = $s.facebox_html || $s.faceboxHtml
	}

	// Figures out what you want to display and displays it
	// formats are:
	// div: #id
	// image: blah.extension
	// ajax: anything else
	function fillFaceboxFromHref(href, klass) {
		// div
		if (href.match(/#/)) {
			var url = window.location.href.split('#')[0]
			var target = href.replace(url, '')
			$.facebox.reveal($(target).clone().show(), klass)

			// image
		} else if (href.match($.facebox.settings.imageTypesRegexp)) {
			fillFaceboxFromImage(href, klass)
			// ajax
		} else {
			fillFaceboxFromAjax(href, klass)
		}
	}

	function fillFaceboxFromImage(href, klass) {
		var image = new Image()
		image.onload = function() {
			$.facebox.reveal('<div class="image"><img src="' + image.src
							+ '" /></div>', klass)
		}
		image.src = href
	}

	function fillFaceboxFromAjax(href, klass) {
		$.get(href, function(data) {
					$.facebox.reveal(data, klass)
				})
	}

	function skipOverlay() {
		return $.facebox.settings.overlay == false
				|| $.facebox.settings.opacity === null
	}

	function showOverlay() {
		if (skipOverlay())
			return

		if ($('facebox_overlay').length == 0)
			$("body")
					.append('<div id="facebox_overlay" class="facebox_hide"></div>')

		$('#facebox_overlay').hide().addClass("facebox_overlayBG").css(
				'opacity', $.facebox.settings.opacity).click(function() {
					$(document).trigger('close.facebox')
				}).fadeIn(200)
		return false
	}

	function hideOverlay() {
		if (skipOverlay())
			return

		$('#facebox_overlay').fadeOut(200, function() {
					$("#facebox_overlay").removeClass("facebox_overlayBG")
					$("#facebox_overlay").addClass("facebox_hide")
					$("#facebox_overlay").remove()
				})

		return false
	}

	/*
	 * Bindings
	 */

	$(document).bind('close.facebox', function() {
				$(document).unbind('keydown.facebox')
				$('#facebox').fadeOut(function() {
							$('#facebox .content').removeClass()
									.addClass('content')
							hideOverlay()
							$('#facebox .loading').remove()
						})
			})

})(jQuery);
